Globe and fixture therefor.



No. 65l,804. Patented June 12, I900.

G. L. HUUGHTUN.

GLOBE AND FIXTURE THEBEFOIL (Application filed Mgr. 23, 1900.)

(No Model.)

NITED STATES PATENT FFICE.

GEORGE L. HOUGHTON, OF WOODSTOCK, MINNESOTA.

GLOBE AND FIXTURE THEREFOR.

SPECIFICATION forming part of Letters Patent No. 651,804, dated June 12,1900.

7 Application filed March 23, 1900. Serial No. 9,85 8. (No model.)

To all whom it may concern:

Be it known that I, GEORGE L. HOUGHTON, a citizen of the United States,residing at Woodstock, in the county of Pipe Stone and State ofMinnesota, have invented a new and useful Globe and Fixtures Therefor;and I hereby declare the following to be a full, clear, and exactdescription of the same.

My invention relates to fixtures for use on both slated and blackboardglobes and all globes intended for use by marking lines and figures withchalk or other substance to be erased and also for use on all kinds ofterrestrial and celestial globes used in schools, colleges, and bygeographers, navigators, and

astronomers.

The objects of this invention are to facilitate the teaching ofgeography, geometry, spherical trigonometry, astronomy, map-drawing,surveying, and all kinds of measurements applicable to the above-namedsciences, the ready translation of degrees into miles and the reverse onany circle of the earth, great or small, and in any direction upon theearthssurface, to locate points and geographical features of the earthreadily by latitude and longitude, chart coast-lines, trace the routesof ships, &c. I attain these objects by the mechanism illustrated by theaccompanying drawings, in Which Figure 1 represents the globe with thefixtures in side elevation, and Fig. 2 represents a top plan View of thesame.

A represents the globe-ball.

B represents the meridian-circle or halfcircle, being fiat like a hoop,of thin material, generally of metalsuch as brass, copper, iron, steel,or other metal or combinations of metals, or other suitablematerial-generally from one (1) inch to two (2) inches broad and dividedinto two sections by a slot or aperture O. The meridian-circle orsemicircle is hung on the axis-rod D, so that the globe may revolvewithin the circle or the circle move around the globe. The right sectionof the circle has on one margin a rule E, scaled in inches and fractionsthereof, as may be desired, the fractions generally being tenths of aninch as the smallest fraction and the even inches numbered from zero (0)at the equator, increasing each way to the poles, respectively, and onthe other margin a rule sealed in the metric system, zero (0) at theequator and even meters numbered, increasing each Way to the poles,respectively, (shown by F.) The left section of the meridian circle hason its right margin a scale of miles G correspondin g to the size of theglobe on the theory that the earth is a sphere eight thousand (8,000)miles in diameter, which may be changed to the more exact figures fixedby astronomers when determined or desired. On the other margin of thissection is a rule sealed in degrees of the circle H, with zero (0) atthe equator and numbered in even sections, generallyfive degrees andmultiples thereof, increasing from the equator to the ninety-degree markat the poles, respectively.

The axis-rod of the globe passes through the slot of the meridian-circleat the north pole and may be loosened or tightened with the thumb-nut I,so as to hold the meridiancircle and globe rigidly to the axis whendesired. There is a disk, dial, or protractorK at the poles on theglobe, divided into numbered sections, as may be desired, generally intosections of fifteen (15) degrees each, thus marking the hours.

There is a flexible quadrant-rule L, which rule has a slot in the centersimilar to that in the meridian-circle, through which it is hung onastem having a thin flat head under the meridian-circle andbetween it andthe surface of the globe. This quadrant-rule slips forth andback on thestem and may be fastened at any point by a thumb-nut M. The stem alsopasses up through a loop or sleeve N, which slides up and down on themeridian circle B, and the stem also passes up through the center of adisk, dial, or protractor 0, having numbered sections, for describingcircles, as may be desired, at any desired angle from any point on theglobe, and this disk is fastened to the loop.

The globes may be mounted on stands of any desired pattern. The southpole of the axis fits into a swivel or swing joint P, Fig. 1, and may befastened with the axis in any angle or position, from horizontal toperpendicular, by tightening the thumb-nut Q, Fig. 1, on the shank ofthe stand B, Fig. 1.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-- 1. In combination Witha globe, ameridianc-ircle having a longitudinal slot extending from pole to poleof said globe and provided with scales of latitude and distances.

2. In combination with a globe, a flexible quadrant-rule havinggraduated scales marked thereon.

3. In combination with a globe, a flexible quadrant-rule adj ustablymounted thereon.

4.. A globe, and in combination therewith a slotted meridian-circle, theglobe-axis passing through the slot in said meridian-circle, and athumb-nut on the end of said axis and adapted to clamp saidmeridian-circle in va- I riously-adjustabl-e positions.

circle adjustably mounted on the axis of said globe, and a flexiblequadrant-rule pivotally and slidably mounted on said meridian-circle.

6. In combination with a globe, a slotted meridian-circle mounted onsaid globe, a sleeve adjust-ably mounted on said meridiancircle, agraduated disk mounted on said sleeve, and a quadrant-rule mounted toturn on said disk.

Washington, Dist'riot of Columbia, March 22, 1900.

GEO. L. HOUGI-ITON.

Witnesses:

WM. H. DE LACY, HENRY A. THOMAS.

